Responsive FEM for Aiding Interactive Geometric Modeling

نویسندگان

  • Nobuyuki Umetani
  • Kenshi Takayama
  • Jun Mitani
  • Takeo Igarashi
چکیده

Numerical simulation methods are used mainly as off-line verification tools in current computer-aided engineering systems to reject designs that fail to satisfy the required constraints, rather than to guide the user toward a better design. This paper presents the integration of a real-time finite-element method (FEM) analysis into interactive geometric modeling. Real-time feedback from numerical simulation during interactive editing can guide users toward improving their design without tedious trial-and-error iterations. We achieve fast FEM analysis during interactive editing by carefully reusing previous computation results such as meshes and matrices based on speed and accuracy trade-offs. We implemented several example applications to demonstrate the versatility of the system. We also present two informal user studies, metallophone and bridge design, to show the effectiveness of the approach. We envision that our tools can assist nonexpert users to design objects that satisfy physical constraints and help them understand the underlying physical principles.

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تاریخ انتشار 2010